it's not based on science. >> there's absolutely no biological reason for any human to drink milk after weaning. certainly milk of another species. it's completely out of the ordinary and therefore there's no buy logical reason to do it. >> so strong sentiments on both sides of this debate, including whether the latest sign shows milk helps prevent bone fractures. what do you think about milk in the school lunch program? voice your opinion on our facebook page. >>> this is 9news now. >> and wusa is your station for the presidential debate. tonight, first debate is just three hours away and we are getting ready to sit down with our sister station to get the facts. >> our coanchor, derek mcginty is live at u.s.a. today headquarters in mcclane tonight with a preview. big night, derek. >> it is indeed a big night, anita. this is the newsroom where they have assembled a team of journalists that will be watching the debate even as we watch the debate. their job is different. their job is to listen and research and make sure that if the candidates try to pass one over on you, perhaps tell a fi